Is it necessary to use Super gas?

Use exactly the octane fuel that is listed in your owners manual. The use of Premium Fuel in an engine designed to run on Regular is a waste of money and will provide no benefits whatsoever. Not more power and no better mileage. However the use of Regular in an engine designed for Premium will cause Pre-detonation or what is commonly called Pinging. Pinging may cause engine damage so burn Premium fuel if your engine is designed to use it. Some people will swear that burning Premium fuel will increase your mileage and provide more power. This is a myth, that just will not go away and is simply not true. Octane prevents pre-detonation and nothing more. The design of the engine is what produces power not the fuel you use.